sample build.gradle for externalizing Postgres

build.gradle

plugins {
  //...
	id "org.flywaydb.flyway" version "6.3.1"
}

dependencies {
  //...
	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
	implementation 'org.flywaydb:flyway-core'
	runtimeOnly 'org.postgresql:postgresql'
}

flyway {
    url = 'jdbc:postgresql://localhost:5432/db_name'
    user = 'user'
    password = 'password'
}